Volume in the June 20 calls climbed to 3,119 against open interest of 1,100 contracts, according to optionMONSTER’s Heat Seeker monitoring program. A single purchase for $1.25 accounted for more than a third of the activity and came just seconds after the sale of 1,000 June 17.50 calls for $2.85, suggesting an investor was rolling an existing position to the higher strike.

AB fell 0.77 percent to $20.41 and is up 22 percent since mid-May. The company will make a presentation at 8:45 a.m. ET tomorrow at the Keefe, Bruyette & Woods Diversified Financial Services Conference in New York.

Call volume in AB outnumbered puts by more than 80 to 1 today, reflecting the bullish sentiment. Most of the activity was focused on the June 20 calls, where purchases accounted for the bulk of volume.

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